呼ばれることはない私はのdrawRectとsetNeedsDisplayは
ImageViewの= [[UIImageView ALLOC] initWithFrame:[holderViewフレーム]を使用してそれにサブビューとasignジェスチャとしてのUIView(uimageviewを運ぶholderview)を加えます。 [imageview setImage:cppobject-> OutputImage]; imageview.contentMode = UIViewContentModeScaleAspectFit;
[holderView addSubview:imageview];
holderView.contentMode = UIViewContentModeScaleAspectFit ;
UIPinchGestureRecognizer *pinchRecognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(scale:)];
[pinchRecognizer setDelegate:self];
[holderView addGestureRecognizer:pinchRecognizer];
[pinchRecognizer release];
UIRotationGestureRecognizer *rotationRecognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotate:)];
[rotationRecognizer setDelegate:self];
[holderView addGestureRecognizer:rotationRecognizer];
[rotationRecognizer release];
panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(move:)];
[panRecognizer setMinimumNumberOfTouches:1];
[panRecognizer setMaximumNumberOfTouches:1];
[panRecognizer setDelegate:self];
[holderView addGestureRecognizer:panRecognizer];
holderView.tag=101;
[self.view addSubview:holderView];
[holderView sizeToFit];
[self AddInformation];
[holderView retain];
[self retain];
その後、panRecognizer機能(移動)で、私は
UIPanGestureRecognizer *gR = (UIPanGestureRecognizer *) sender ;
NSValue *value = [NSValue valueWithCGPoint: [gR locationInView:gR.view]];
[Points addObject:value];
[holderView setNeedsDisplay];
NSLog(@"End of measuring") ;
を使用して線を描画したいと私は
内のすべてのサブビューの上に線を引くポイントにポイントを使用します - (無効)drawRect :(CGRect)rect { NSLog(@ "Entered Draw In Rect");
if (Measuring) {
[[UIColor redColor] setStroke];
UIBezierPath *pathToDraw = [UIBezierPath bezierPath];
for (int n = 1; n < [Points count] - 1 ; n++) {
NSValue * value = [Points objectAtIndex:(NSInteger)n];
CGPoint point = [value CGPointValue];
[pathToDraw moveToPoint:point];
value = [Points objectAtIndex:(NSInteger)n+1];
point = [value CGPointValue];
[pathToDraw addLineToPoint:point];
}
[pathToDraw stroke];
}
}
問題は[holderView setNeedsDisplay]です。 drawRectを呼び出さないでください。それに関する提案またはヘルプ